Checking For Proper Pump And Bypass Valve Operation; Starting Up The Product; Setting The Timer - Grundfos Comfort System Installation And Operating Instructions Manual

4.4 Checking for proper pump and
bypass valve operation
After installing the pump and the bypass valve,
connect the pump to the power supply and
check the installation as follows:
1. Close the angle stop valve for the cold water
below the sink.
2. Open the cold-water faucet.
3. Check that when you turn on the cold-water
faucet, the flow of cold water gradually
decreases and stops as the bypass valve
closes.
4. Check that when you turn on the hot-water
faucet, hot water begins to flow quickly.
5. For troubleshooting, see section
finding the product.
Correct
Incorrect
Fig. 6 Correct installation of the bypass
valve
8

5. Starting up the product

5.1 Setting the timer

8. Fault
Fig. 7
DANGER
Electric shock
Death or serious personal injury
- Do not plug this timer into an
extension cord.
- Always plug the 3-prong plug
directly into a properly grounded
outlet. Never attempt to defeat this
safety feature.
- Do not use the timer to control
devices that could have dangerous
consequences due to inaccurate
timing, such as sun lamps, sauna,
heaters, and crock pots.
- Follow all local electrical codes
during use.
There are no user serviceable parts
inside.
Before initial use, plug the timer into
an AC outlet for at least 30 minutes to
charge the internal battery. If the
display is not visible, press [RESET]
to restart the timer and erase all
settings and events. You may unplug
the timer from the AC outlet for easier
setting.
Timer